Switching 12V with an NPN transistor only outputs 5V on the

Solved: Using BJT as a switch for negative voltage - NI Community

PNP transistor can't off, help appreciated ty! - Project Guidance - Arduino Forum

Electronic Relay Switch Circuit - NPN, PNP, N & P Channel

switches - Switching 12 V with an active low 5 V signal - Electrical Engineering Stack Exchange

digital logic - Use BJT transistor as a switch without inverting the signal - Electrical Engineering Stack Exchange

Transistors as switches for 5V logic. Why is my output reading low here? : r/AskElectronics

Transistor as a Switch - Using Transistor Switching

Using Transistor as a Switch

Transistors as switches for 5V logic. Why is my output reading low here? : r/AskElectronics

12V Motor Control With 5V Arduino and NPN Transistor As Speed Control Switch